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Ultrahigh volatile iodine capture by conjugated microporous polymer based on N,N,N',N'-tetraphenyl-1,4-phenylenediamine

Abstract

Conjugated microporous polymers have caused great concern in various fields such as gas adsorption, iodine adsorption, chemosensors, photocatalysis, and electronics. Herein, three multifunctional electron-rich conjugated microporous polymers (CMP-LS46) were facilely synthesized via Suzuki and Sonogashira polymerization reactions of N,N,N',N'-tetrakis(4-bromophenyl)benzene-1,4-diamine with aromatic borate and 1,3,5-triethynylbenzene, respectively. These CMP-LSs possess intrinsic porosity (BET surface areas up to 1185 m2 g-1) as well as moderate CO2 adsorption capacity. Benefiting from their good pore properties and expanded nitrogen-rich π-conjugated networks, CMP-LS46 display excellent I2 uptake of 3.32, 4.40 and 2.44 g g-1 in a vapor atmosphere, respectively. The release processes of I2@CMP-LS46 into ethanol and upon heating were explored, and these CMP-LSs exhibit outstanding capacity for the reversible uptake of iodine. The results of the iodine adsorption experiment show that CMP-LS46 can be used as iodine sorbents to treat environmental problems, meanwhile, this work provides ideas for designing effective iodine adsorbents. Furthermore, CMP-LS4 and CMP-LS5 exhibit solvatochromic fluorescence behavior with increasing the polarity of aprotic solvents.

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Publication details

The article was received on 22 Feb 2019, accepted on 08 Apr 2019 and first published on 09 Apr 2019


Article type: Paper
DOI: 10.1039/C9PY00288J
Citation: Polym. Chem., 2019, Accepted Manuscript

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    Ultrahigh volatile iodine capture by conjugated microporous polymer based on N,N,N',N'-tetraphenyl-1,4-phenylenediamine

    S. Wang, Y. Liu, Y. Ye, X. Meng, J. Du, X. Song and Z. Liang, Polym. Chem., 2019, Accepted Manuscript , DOI: 10.1039/C9PY00288J

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